One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,9)(5,14)(6,10)(7,11)(12,15)(13,16)(17,18)(19,27)(20,26)(21,24)(22,25)(23,29)(28,32)(30,31) involution — undirected(1,3)(2,7)(4,11)(5,13)(6,12)(8,14)(9,15)(10,16)(17,19,22,30)(18,23,25,32)(20,28,21,29)(24,31,26,27)(1,3)(2,8)(4,13)(5,11)(6,12)(7,14)(9,16)(10,15)(18,24)(20,21)(23,31)(25,26)(27,32)(28,29) involution — undirected(1,4,6,5)(2,9,10,14)(3,11,12,13)(7,15,16,8)(17,20,22,21)(18,24,25,26)(19,28,30,29)(23,31,32,27)(2,10)(7,16)(8,15)(9,14)(18,25)(23,32)(24,26)(27,31) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.